Cant connect to internet, tried everything what should I do

What's happening with the connection is I have tried everything to get back on Xbox live but it won't let me on. When I try to do a connection test it connects to the router then the internet and then stop,s when it tries to connect to xbox live. I also
have called my ISP but they said I should be able to get on but I can't

it says I am connected to the internet when I run the connection test but shows no internet when I load internet explorer, I have tried everything I can think of and don't know what else to do

Same This just started today for me when I go to Set up wireless network nothing even pops up And when I add network it doesn't support the security of it anymore which makes no sense it did yesterday and my brother has an Xbox as well on the same Wi-Fi
and he connects just fine So like what is going on.

If you are using a wired connection using Broadband Extenders (Flex for me). I would suggest re-connecting those as you would when initially pairing them, holding the link button for 5-8 seconds, wait for the steady light, then again for 1 second, then go
to another Extender plug and press that Link button for 1 second. Then plug in the ethernet cables to the xbox and Extenders again.

if you are wireless i would suggest completely powering down the xbox and unplugging all cables. Hold the xbox button on the console for up to 10 seconds and wait for it beep and shut off then un plug all the cables, wait 5 minutes then try again. If nothing
i really am not sure of anything other than resetting your router at the same time as doing this.

i cant recover it, before i created this new acc with the email that was hacked when i tried recovering it, a error said that they couldnt recognize the email or phone number. i cant do anything, i tried everything. what should i do.